Hello I got a 2001 Silverado Z71 4x4 4L60e. I recently installed a new ShiftRite valve body, fluid and filter because I was getting a P1870 code and harsh 1-2/2-3 shifts after 10+ highway mile trip. Also the converter lockup showed no evidence of locking up. The rpms did not drop after cruising in 4th gear.
After the new valve body install I now have harsh 1-2 shifts only. No matter if trans is cold or warm. After a 20+ mile tripe I ran the codes and had a pending code for P1870 again. Also converter still showed no signs of locking up (no rpm drop after 4th gear.)
If the new valve body didnt fix the issue then what could the issue be?
After the new valve body install I now have harsh 1-2 shifts only. No matter if trans is cold or warm. After a 20+ mile tripe I ran the codes and had a pending code for P1870 again. Also converter still showed no signs of locking up (no rpm drop after 4th gear.)
If the new valve body didnt fix the issue then what could the issue be?